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	/*
	* Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package com.sun.java.swing.plaf.motif;

	import javax.swing.*;
	import javax.swing.border.*;
	import javax.swing.plaf.*;
	import javax.swing.plaf.basic.BasicScrollPaneUI;

	import java.beans.PropertyChangeEvent;
	import java.beans.PropertyChangeListener;

	/**
	* A CDE/Motif L&F implementation of ScrollPaneUI.
	* <p>
	* <strong>Warning:</strong>
	* Serialized objects of this class will not be compatible with
	* future Swing releases. The current serialization support is appropriate
	* for short term storage or RMI between applications running the same
	* version of Swing. A future release of Swing will provide support for
	* long term persistence.
	*
	* @author Hans Muller
	*/
	public class MotifScrollPaneUI extends BasicScrollPaneUI
	{
	private final static Border vsbMarginBorderR = new EmptyBorder(0, 4, 0, 0);
	private final static Border vsbMarginBorderL = new EmptyBorder(0, 0, 0, 4);
	private final static Border hsbMarginBorder = new EmptyBorder(4, 0, 0, 0);

	private CompoundBorder vsbBorder;
	private CompoundBorder hsbBorder;

	private PropertyChangeListener propertyChangeHandler;

	@Override
	protected void installListeners(JScrollPane scrollPane) {
	super.installListeners(scrollPane);
	propertyChangeHandler = createPropertyChangeHandler();
	scrollPane.addPropertyChangeListener(propertyChangeHandler);
	}

	@Override
	protected void uninstallListeners(JComponent scrollPane) {
	super.uninstallListeners(scrollPane);
	scrollPane.removePropertyChangeListener(propertyChangeHandler);
	}

	private PropertyChangeListener createPropertyChangeHandler() {
	return new PropertyChangeListener() {
	@Override
	public void propertyChange(PropertyChangeEvent e) {
	String propertyName = e.getPropertyName();

	if (propertyName.equals("componentOrientation")) {
	JScrollPane pane = (JScrollPane)e.getSource();
	JScrollBar vsb = pane.getVerticalScrollBar();
	if (vsb != null && vsbBorder != null &&
	vsb.getBorder() == vsbBorder) {
	// The Border on the verticall scrollbar matches
	// what we installed, reset it.
	if (MotifGraphicsUtils.isLeftToRight(pane)) {
	vsbBorder = new CompoundBorder(vsbMarginBorderR,
	vsbBorder.getInsideBorder());
	} else {
	vsbBorder = new CompoundBorder(vsbMarginBorderL,
	vsbBorder.getInsideBorder());
	}
	vsb.setBorder(vsbBorder);
	}
	}
	}};
	}

	@Override
	protected void installDefaults(JScrollPane scrollpane) {
	super.installDefaults(scrollpane);

	JScrollBar vsb = scrollpane.getVerticalScrollBar();
	if (vsb != null) {
	if (MotifGraphicsUtils.isLeftToRight(scrollpane)) {
	vsbBorder = new CompoundBorder(vsbMarginBorderR,
	vsb.getBorder());
	}
	else {
	vsbBorder = new CompoundBorder(vsbMarginBorderL,
	vsb.getBorder());
	}
	vsb.setBorder(vsbBorder);
	}

	JScrollBar hsb = scrollpane.getHorizontalScrollBar();
	if (hsb != null) {
	hsbBorder = new CompoundBorder(hsbMarginBorder, hsb.getBorder());
	hsb.setBorder(hsbBorder);
	}
	}

	@Override
	protected void uninstallDefaults(JScrollPane c) {
	super.uninstallDefaults(c);

	JScrollBar vsb = scrollpane.getVerticalScrollBar();
	if (vsb != null) {
	if (vsb.getBorder() == vsbBorder) {
	vsb.setBorder(null);
	}
	vsbBorder = null;
	}

	JScrollBar hsb = scrollpane.getHorizontalScrollBar();
	if (hsb != null) {
	if (hsb.getBorder() == hsbBorder) {
	hsb.setBorder(null);
	}
	hsbBorder = null;
	}
	}


	public static ComponentUI createUI(JComponent x) {
	return new MotifScrollPaneUI();
	}
	}

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